Hardware manual

Maintenance 4
Agilent 7500 Series ICP-MS Hardware Manual 4-115
Refitting the Plate Bias Lens
When refitting lenses in the vacuum chamber, begin with the Plate Bias Lens.
If you refit the Reaction cell assembly first, you will not be able to install the
Plate Bias Lens.
Always wear laboratory gloves when refitting the Plate Bias Lens. The
following procedure explains how to refit the lens:
1 Install the Plate Bias Lens and Cell Exit Guide in the vacuum chamber.
Install the Plate Bias Lens in the direction illustrated in Figure 91.
2 Secure the Plate Bias Lens and Cell Exit Guide with screws.
Securely tighten the Plate Bias Lens with 2 screws.
After you have finished installing the Plate Bias Lens, refit the Reaction cell
assembly.
Refitting the Reaction Cell Assembly
It is easiest to refit the Extraction Lens- Omega Lens assembly and the
Reaction cell assembly in the reverse order to which they were dismantled.
After all the lenses are cleaned, begin with the Reaction cell assembly.
Be sure to wear laboratory gloves when refitting the Reaction cell assembly.
The following procedure explains how to refit the assembly. (Refer to
Figure 85)
1 Insert the O- ring.
Insert the O- ring on the Cell Entrance Lens, QP Focus. If the O- ring has
cracks or is compressed, replace it with a new one.
NOTE
The Cell Focus, Cell Entrance Lens, QP Focus, and Cell Exit Lens are different.